发明名称 |
Seismic source which incorporates earth coupling as part of the transmitter resonance |
摘要 |
An acoustic energy source for imparting acoustic energy into the Earth's subsurface includes an electrically driven transducer coupled to a source of swept frequency alternating current. A tunable Helmholtz resonator is disposed proximate the transducer. In one example, the resonator has a tuning device configured to maintain a resonant frequency substantially equal to an instantaneous frequency of the alternating current. The tuning device includes an actuator coupled to a sleeve, wherein the sleeve is disposed over selected numbers of openings in a wall of a tube on the resonator. The transducer and the resonator are disposed in a wellbore drilled through rock formations. The wellbore has a plurality of layers of fluid therein, each layer thereof having a different density and/or viscosity. |
申请公布号 |
US8400872(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US20100885660 |
申请日期 |
2010.09.20 |
申请人 |
GULGNE JACQUES Y.;PACE NICHOLAS G.;DINN GARY J.;WRIGHT RICHARD;ACOUSTIC ZOOM, INC. |
发明人 |
GULGNE JACQUES Y.;PACE NICHOLAS G.;WRIGHT JAMES A.;DINN GARY J. |
分类号 |
G01V1/40 |
主分类号 |
G01V1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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